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60
Appendix B: Wireless Security
Security Threats Facing Wireless Networks
Compact Wireless-G Broadband Router
WPA Personal
. Select the type of algorithm, TKIP or AES, enter a password in the Passphrase field of 8-64
characters, and enter a Group Key Renewal period time between 0 and 99,999 seconds, which instructs the
Router or other device how often it should change the encryption keys.
WPA2 Personal
. WPA2 gives you one encryption method, AES, with dynamic encryption keys. Enter a
Passphrase of 8-63 characters. Then enter a Group Key Renewal period, which instructs the Router how often
it should change the encryption keys.
WPA2 Mixed Mode
. WPA2 Mixed Mode gives you TKIP+AES encryption. Enter a Passphrase of 8-63
characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change
the encryption keys.
Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting
sensitive data over your network, encryption should be used.
These security recommendations should help keep your mind at ease while you are enjoying the most flexible
and convenient technology Linksys has to offer.
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61
Appendix C: Upgrading Firmware
Compact Wireless-G Broadband Router
Appendix C: Upgrading Firmware
The Broadband Router's firmware is upgraded through the Web-based Utility's Administration tab. Do not
upgrade the firmware unless you are experiencing problems with the Router or the new firmware has a feature
you want to use.
To upgrade the Router’s firmware, follow these instructions:
1.
Download the firmware from Linksys's website at
www.linksys.com
. Then extract the firmware file.
2.
Click
Firmware Upgrade
from the Web-Utility's Administration tab, and the
Upgrade Firmware
screen will
appear.
3.
Enter the location of the extracted firmware file or click the
Browse
button to find the file.
4.
Then click the
Upgrade
button and follow the on-screen instructions.
Figure C-1: Administration Tab - Firmware Upgrade
Note:
The Router will lose all of the settings you have customized. Before you upgrade its firmware,
write down all of your custom settings. After you upgrade its firmware, you will have to re-enter all
of your configuration settings.
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62
Appendix D: Windows Help
Compact Wireless-G Broadband Router
Appendix D: Windows Help
Almost all Linksys wireless products require Microsoft Windows. Windows is the most used operating system in
the world and comes with many features that help make networking easier. These features can be accessed
through Windows Help and are described in this appendix.
TCP/IP
Before a computer can communicate with the Broadband Router, TCP/IP must be enabled. TCP/IP is a set of
instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well.
Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides
complete instructions on enabling TCP/IP.
Shared Resources
If you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on
utilizing shared resources.
Network Neighborhood/My Network Places
Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the
version of Windows you're running). Windows Help provides complete instructions on adding PCs to your
network.
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63
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter
Windows 98SE or Me Instructions
Compact Wireless-G Broadband Router
Appendix E: Finding the MAC Address and IP Address for Your
Ethernet Adapter
This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC
filtering and/or MAC address cloning feature of the Router. You can also find the IP address of your computer’s
Ethernet adapter. This IP address is used for the Router’s filtering, forwarding, and/or DMZ features. Follow the
steps in this appendix to find the adapter’s MAC or IP address in Windows 98, Me, 2000, or XP.
Windows 98SE or Me Instructions
1.
Click
Start
and
Run
. In the
Open
field, enter
winipcfg
. Then press the
Enter
key or the
OK
button.
2.
When the
IP Configuration
screen appears, select the Ethernet adapter you have connected to the Router via a
Category 5 Ethernet network cable.
3.
Write down the Adapter Address as shown on your computer screen. This is the MAC address for your
Ethernet adapter and is shown as a series of numbers and letters.
The MAC address/Adapter Address is what you will use for MAC address cloning or MAC filtering.
The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may
show something different.
Windows 2000 or XP Instructions
1.
Click
Start
and
Run
. In the
Open
field, enter
cmd
. Press the
Enter
key or click the
OK
button.
2.
At the command prompt, enter
ipconfig /all
. Then press the
Enter
key.
Figure E-2: MAC Address/Adapter Address
Figure E-1: IP Configuration Screen
Note:
The MAC address is also called the Adapter Address.
Figure E-3: MAC Address/Physical Address
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64
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter
For the Router’s Web-based Utility
Compact Wireless-G Broadband Router
3.
Write down the Physical Address as shown on your computer screen (Figure E-3); it is the MAC address for
your Ethernet adapter. This appears as a series of numbers and letters.
The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering.
The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may
show something different.
For the Router’s Web-based Utility
For MAC filtering, enter the 12-digit MAC address.
For MAC address cloning, enter the 12-digit MAC address in the
MAC Address
fields provided, two digits per field.
Figure E-4: Wireless MAC Filter List
Note:
The MAC address is also called the Physical Address.
Figure E-5: MAC Address Clone
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